Mechanical Fuel Pump – Fits Yamaha 25-90 HP, Suzuki 8-65 HP & Tohatsu 25-115 HP (Replaces 6A0-24410-00, 15100-94300, 356-04000-1)
Mechanical Fuel Pump – Fits Yamaha 25-90 HP, Suzuki 8-65 HP & Tohatsu 25-115 HP (Replaces 6A0-24410-00, 15100-94300, 356-04000-1) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Mechanical Fuel Pump – Fits Yamaha 25-90 HP, Suzuki 8-65 HP & T...
Product Details
This aftermarket Mechanical Fuel Pump is a direct-fit replacement for a wide range of Yamaha, Suzuki, and Tohatsu/Nissan 2-stroke outboard engines. It is designed to restore original fuel system performance on models including Yamaha 25–90 HP (1984–2009), Suzuki 8–65 HP (1986–2000), and Tohatsu/Nissan 25–115 HP engines, ensuring reliable fuel delivery operated by engine crankcase pressure.
It serves as a direct cross-reference for multiple OEM part numbers, including Yamaha 6A0-24410-00, Suzuki 15100-94300, and Tohatsu 356-04000-1, as well as aftermarket equivalents from Sierra and Mallory.
- Installs as a direct OEM-style replacement for a straightforward fit.
- Constructed with a durable metal housing to withstand the marine environment.
- Operates mechanically via engine crankcase pressure pulses, just like the original factory part.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 663-24410-00 |
| Yamaha | 692-24410-00 |
| Yamaha | 6A0-24410-00 |
| Yamaha | 6A0-24410-01 |
| Yamaha | 6A0-24410-02 |
| Yamaha | 6A0-24410-03 |
| Yamaha | 6A0-24410-04 |
| Yamaha | 6A0-24410-05 |
| Suzuki | 15100-94300 |
| Suzuki | 15100-94301 |
| Suzuki | 15100-94302 |
| Suzuki | 15100-94303 |
| Suzuki | 15100-94310 |
| Suzuki | 15100-94311 |
| Suzuki | 15100-94312 |
| Tohatsu | 356-04000-0 |
| Tohatsu | 356-04000-1 |
| Mallory | 9-35300 |
| Mallory | 9-35305 |
| Sierra | 18-7334 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
Yamaha Compatibility: Fits various 2-stroke models from 25 HP to 90 HP manufactured between 1984 and 2009.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | 2-Stroke | 25 | 2-Stroke | 1994 | 6A0-24410-00-00 | 2 cylinder, 2.638 bore |
| Yamaha | 2-Stroke | 30 | 2-Stroke | 1994–1997 | 6A0-24410-00-00 | 2 cylinder, 2.638 bore |
| Yamaha | 2-Stroke | 40 | 2-Stroke | 1984–2006 | 6A0-24410-00-00 | 3 cylinder, 2.638 bore |
| Yamaha | 2-Stroke | 48 | 2-Stroke | 1995–2000 | 6A0-24410-00-00 | 2 cylinder, 3.228 bore |
| Yamaha | 2-Stroke | 50 | 2-Stroke | 1984–2008 | 6A0-24410-00-00 | 3 cylinder, 2.638 bore |
| Yamaha | 2-Stroke | 55 | 2-Stroke | 1989–2005 | 6A0-24410-00-00 | Various models |
| Yamaha | 2-Stroke | 60 | 2-Stroke | 1991–2006 | 6A0-24410-00-00 | 3 cylinder, 2.834 bore |
| Yamaha | 2-Stroke | 70 | 2-Stroke | 1986–2008 | 6A0-24410-00-00 | 3 cylinder, 2.834 bore |
| Yamaha | 2-Stroke | 75 | 2-Stroke | 1994–1999 | 6A0-24410-00-00 | 3 cylinder, 3.228 bore |
| Yamaha | 2-Stroke | 85 | 2-Stroke | 1990–1994 | 6A0-24410-00-00 | 3 cylinder, 3.228 bore |
| Yamaha | 2-Stroke | 90 | 2-Stroke | 1984–2009 | 6A0-24410-00-00 | 3 cylinder, 3.228 bore |
| Yamaha | Jet | 40 | 2-Stroke | 1992–2000 | 6A0-24410-00-00 | 3 cylinder jet model |
| Yamaha | Jet | 50 | 2-Stroke | 1991–1999 | 6A0-24410-00-00 | 3 cylinder jet model |
| Yamaha | Jet | 90 | 2-Stroke | 1991–1999 | 6A0-24410-00-00 | 3 cylinder jet model |
| Yamaha | Commercial | 40 | 2-Stroke | 1995–1997 | 6A0-24410-00-00 | 2 cylinder commercial model |
Suzuki Compatibility: Fits various DT series 2-stroke models from 8 HP to 65 HP manufactured between 1986 and 2000.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Suzuki | DT8C | 8 | 2-Stroke | 1986–1998 | 15100-94300 | |
| Suzuki | DT9.9C | 9.9 | 2-Stroke | 1986–1998 | 15100-94300 | |
| Suzuki | DT20 | 20 | 2-Stroke | 1986–1998 | 15100-94300 | |
| Suzuki | DT25/DT25C | 25 | 2-Stroke | 1989–2000 | 15100-94300 | 3 cylinder, 2.440 bore |
| Suzuki | DT30/DT30C | 30 | 2-Stroke | 1988–1997 | 15100-94300 | 3 cylinder, 2.440 bore |
| Suzuki | DT35 | 35 | 2-Stroke | 1987–1989 | 15100-94300 | 2 cylinder |
| Suzuki | DT40/DT40C | 40 | 2-Stroke | 1986–1998 | 15100-94300 | 2 cylinder, 3.110 bore |
| Suzuki | PU40 | 40 | 2-Stroke | 1989–1994 | 15100-94300 | 2 & 4 cylinder models |
| Suzuki | DT50 | 50 | 2-Stroke | 1986–1997 | 15100-94300 | |
| Suzuki | DT55 | 55 | 2-Stroke | 1988–1997 | 15100-94300 | 3 cylinder, 2.874 bore |
| Suzuki | PU55 | 55 | 2-Stroke | 1989–1994 | 15100-94300 | 3 & 4 cylinder models |
| Suzuki | DT60 | 60 | 2-Stroke | 1986–1997 | 15100-94300 | |
| Suzuki | DT65 | 65 | 2-Stroke | 1988–1997 | 15100-94300 | 3 cylinder, 2.874 bore |
Tohatsu/Nissan Compatibility: Fits a range of 2-stroke outboards from 25 HP to 115 HP. Please verify your model is listed.
| Brand | Model | Rated HP | Stroke | OEM Part No. |
|---|---|---|---|---|
| Tohatsu | M25C3, NS25C3 | 25 | 2-Stroke | 356-04000-1 |
| Tohatsu | M30A4, NS30A4 | 30 | 2-Stroke | 356-04000-1 |
| Tohatsu | M40C, MD40B2, MD40B (AQ) | 40 | 2-Stroke | 356-04000-1 |
| Nissan | NS40C, NSD40B2, NSD40B (AQ) | 40 | 2-Stroke | 356-04000-1 |
| Tohatsu | MD50B2, MD50B (AQ) | 50 | 2-Stroke | 356-04000-1 |
| Nissan | NSD50B2, NSD50B (AQ) | 50 | 2-Stroke | 356-04000-1 |
| Tohatsu | M70C, MD70B, MD70B (AQ) | 70 | 2-Stroke | 356-04000-1 |
| Nissan | NS70C, NSD70B, NSD70B (AQ) | 70 | 2-Stroke | 356-04000-1 |
| Tohatsu | MD75C2 | 75 | 2-Stroke | 356-04000-1 |
| Nissan | NSD75C2 | 75 | 2-Stroke | 356-04000-1 |
| Tohatsu | M90A, MD90B, MD90B (AQ), MD90C2 | 90 | 2-Stroke | 356-04000-1 |
| Nissan | NS90A, NSD90B, NSD90B (AQ), NSD90C2 | 90 | 2-Stroke | 356-04000-1 |
| Tohatsu | MD115A2 | 115 | 2-Stroke | 356-04000-1 |
| Nissan | NSD115A2 | 115 | 2-Stroke | 356-04000-1 |
Technical Specs
- Product Type
- Mechanical Fuel Pump
- Installation
- Direct OEM Replacement
- Fuel Type
- Gasoline
- Connection
- Hose Barb
- Housing Material
- Metal/Stainless Steel
- Housing Color
- Silver/Metal
- Weight
- 0.17 kg (0.38 lbs)
- Fitting Type
- Hose Barb
- Working Pressure
- Stock OEM Specification
- Warranty
- Sierra: Limited Lifetime, Aftermarket brands: varies
- Other Technical Attributes
- Mechanical pump operated by engine crankcase pressure
What’s in the Box
- 1 x Fuel Pump (6A0-24410-00/15100-94300/356-04000-1)
- Note: Package contents can vary by brand. Some may include a gasket or clips, while others include only the pump.
Installation Notes
- Disconnect the battery and relieve any pressure from the fuel system.
- Place absorbent rags under the fuel pump to catch any spilled fuel.
- Carefully disconnect the inlet, outlet, and pulse fuel lines from the pump. Note their orientation.
- Remove the mounting bolts securing the old fuel pump and detach it from the engine block.
- Clean the mounting surface on the engine block, removing any old gasket material.
- Install the new fuel pump, ensuring the gasket (if required) is correctly seated.
- Secure the pump with the mounting bolts, tightening them to the manufacturer's specified torque.
- Reconnect the fuel lines to their correct positions on the new pump.
- Reconnect the battery, prime the fuel system if necessary, and check for any leaks before starting the engine.
Troubleshooting & FAQ
How do I know if my fuel pump is failing?
Common signs of a failing mechanical fuel pump include the engine sputtering at high speeds, loss of power, difficulty starting, or the engine stalling and not restarting. You may also find fuel leaking from the pump body, which indicates a ruptured internal diaphragm and requires immediate replacement.
Does this fuel pump include a new gasket?
Package contents vary by manufacturer. While some aftermarket brands may include a gasket and clips, many—including the direct Sierra replacement—do not. We recommend inspecting your old gasket. If it is damaged or worn, you should purchase a new one separately to ensure a proper seal.
How can I be sure this fits my specific engine?
This pump fits a very wide range of models. The best way to confirm fitment is to check your original part number against the list in the Part Number Matrix. Additionally, consult the Engine & Model Compatibility tables on this page to find your engine's HP, model, and year.
What is the difference between this mechanical pump and an electric one?
This is a mechanical fuel pump, which is driven by the pressure pulses from the engine's crankcase. It's a simple, reliable design common in many 2-stroke outboards. Electric fuel pumps use an internal electric motor and are typically found on fuel-injected (EFI) or larger carbureted 4-stroke engines.
What is the recommended replacement interval?
There is no fixed replacement interval for mechanical fuel pumps. They are typically replaced when they fail. However, for preventative maintenance, it is wise to inspect the pump for any signs of leaks or damage during regular service intervals (e.g., every 100-300 hours) as recommended in your engine's service manual.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
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